I'm trying to design my plumbing for a slab home but I'm not sure how to vent every thing

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Originally Posted by nodakgoose

i'm trying to design my plumbing for a slab home but i'm not sure how to vent every thing

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EVERY fixture has a trap and every trap has to have a vent.
Most bathroom groups are roughed in like this.
Toilet connects to sewer main or the stack vent. Lavatory connects to toilet drain and runs a vent off the top the stubout tee out the roof or revents back into a dry vent in the attic.. The toilet wet vents through the lavatory vent and the tub/shower connects to the lavatory drain and is wet vented by it. This is a normal rough in and is acceptable both by local and state codes and also The Standard Plumbing Code Book in 90 percent of the country. Check your local codes to make sure you're not in the excluded 10 percent.. The vent off the lavatory may be run out the roof or revented back into a dry vent in the attic or if you're reventing back into a fixtures dry vent you must make your connection at least 6 inches over that fixtures flood rim. Good luck and thank you for rating my answer. Tom

Design your house. Have blueprints drawn. Call plumber. Give him copy of your blueprint. Plumber will rough it in according to framing page.